Aaron colton



AARON OOL'rON, OF S'Y'OAMORE, ILLINOIS.

Letters Potent No.- 75,863, dated Marct24, 1868.

IMPROVEMENT IN DAMPERS FOR SITOiVB-IPIPES,v

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TO AIL'WHOMIT MAY CONCERN: i

Be it Iknown that I, :AARON COLTON, of Sycamore, in the county of De Kalb, and State of Illinois, have invented a new and improved Damper for Stove-Pipes; and I do hereby declare that the folloiviiigis a full, clear, and exact description thereof,`which willenable thos'e skilled' in the art to make and use the same, reference being had to the accompanying drawings,^fforming part of this specification.

This invention consists in oounterpoising or balancing a damper Vfor stove-pipes in such a'manner that the damper will be self-regulating, ciosing as. the draught of the steve increases, and opening as the draught diminishes, so as to insure a steady or uniform combustion of the fuel at all times. The' diiicultyzwhieli has hitherto attended the introduction into general use of the self-regulating damper has been partly'-wing to the cumbersome manner in which they havebeenv designed, butchieily to the' fact that they have becnungainly in appearance and cumbersome, because of the elaborate machinery by which said devices have been attached to stove-doors, which causehas almost-precluded their application to cooking-stoves, (the door having frequently to lie opcned,) where uniform heat Vis most desirable, and the economy of fuel equally ifnot more important than in the parlor-stove, and this device is designed to remedythose fatal objections tothe automatic damper whicb'havc hitherto prevailed and prevcntedits adoption. In the accompanying4 sheet of drawings-v Figure 1 is a longitudinal central section of a piece of stove-pipe provided ivith a damper constructed or arranged according to my invention. i

Figure 2, an end view ofthe same.

Similar. letters of reference indicate corresponding parts. p

A represents a section of a`stove-pipe, and B a damper fitted therein, and attached, at one side of its centre,

to a shaft,` C, which passes transversely through the pipe, and is allowed to turn freely therein. The ends of this shaft C, atthe outer side-of the pipe; are bent so as to'form arms or cranks, a a', which are about in the same plane but vproject from' opposite sides of. the shaft, as shown in iig. 2.f These cranks a'a are notched, so that aiweigh t,j D lmay be suspended upon them to counterpoise the damper, In' the tivo figs. 1 and 2,' tl1e weight is show I'i's' 1' .lspcnded on the arm a, which is designed for it ivhen'thepipe is'in a vertical position, and the weight is placed, igher up or lower down on the arm according to the strength of the draught, a strong draught having a tendency to raise and close the damper, and requiring the weight to be adjusted further down =on' the arm than when-the draught is weak or light. The weight therefor must' be adjustedon thc arm to suit the condition of the draught atthe tiine being, it being well known that the draught of chimneys varies very materially according to the wind, the velocity and direetionof the same, and the state of the atmosphere, light or heavy. After the weight is properly'adjusted, the'damper will bo self-regulating, rise (close) ivhen the draught temporarily increases in strength, and fall (open) as Athe draught temporarily decreases. Byl Athis means a 4steady and uniform combustion Of the fuel Vis obtained. When the pipe is in a horizontal position, the weight D is hung on the arm a. This is the object of4 having two. arms, which is a' necessary provision, on account of the 'section of pipe in which the damper is fitted being place-d as frequently ,in a horizontal as in al vertical position.

I claim as new, and desire to 'secure by Letters Patent-, The damper, constructed as described, consisting of the right-angular shaft' C, passing transversely'through the stove-pipe, A and secured to the under side of the damper B, 'the arms ava of' said shaftyupon each side of the stove-pipe, being notched to receive the weight D, as herein. described, for the purpose specified- AARON O'OLTON.-

Witnesses:

L. F. Comfort, Gao? MANDLnn. 

